fm_move_file · K-Personal MCP: Risk & Policy

WHAT IT DOES

What fm_move_file does on K-Personal MCP

AI agents use fm_move_file to create or update resources in K-Personal MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your K-Personal MCP environment.

WHY IT NEEDS A POLICY

Why fm_move_file needs a policy

File movement is a reversible write operation—data is not deleted but relocated, and the description explicitly mentions automatic backup protection before overwriting. While it modifies file system state, the safeguards (auto-backup, system path protection) and reversibility place it in Write rather than Destructive.

From the tool's definition Tool name 'fm_move_file' and description stating '파일을 이동합니다' (moves files). The description notes automatic backup before overwriting and rejection of system-protected paths.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

fm_move_file Rate-limited

fm_move_file stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "fm_move_file": {
      "limits": [
        {
          "counter": "fm_move_file_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches K-Personal MCP, so you can run agents against it safely.

FAQ

Questions about fm_move_file

What does the fm_move_file tool do? +

파일을 이동합니다. 덮어쓰기 전 자동 백업됩니다. 시스템 보호 경로는 거부됩니다. It is categorised as a Write tool in the K-Personal MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on fm_move_file? +

Register the K-Personal MCP server in PolicyLayer and add a rule for fm_move_file: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches K-Personal MCP. Nothing to install.

What risk level is fm_move_file? +

fm_move_file is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit fm_move_file? +

Yes. Add a rate_limit block to the fm_move_file rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block fm_move_file completely? +

Set action: deny in the PolicyLayer policy for fm_move_file. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides fm_move_file? +

fm_move_file is provided by the K-Personal MCP server (lee30934-byte/k-personal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.